# 7.5/7.6
prompt = "\nHow old are you?"
prompt += "\nEnter 'quit' when you are finished."

while True:
    age = input(prompt)

    age = int(age)
    if age < 3:
        print("You get in free!")
    elif age < 12:
        print("Your ticket is 10$!")
    else:
        print("Your ticket is 15$!")